3v4l.org

run code in 300+ PHP versions simultaneously
<?php function doSmth(int $mem): void { $array = range(0, 99); echo 'memory in function: ' . memory_get_usage() - $mem . PHP_EOL; } // Сначала выводим значение memory_get_usage() echo 'memory before use: ' . memory_get_usage() . PHP_EOL; $mem = memory_get_usage(); echo 'init $mem' . PHP_EOL; doSmth($mem); echo 'memory after use: ' . memory_get_usage() - $mem . PHP_EOL;
Output for 8.2.0 - 8.2.7
memory before use: 387944 init $mem memory in function: 2616 memory after use: 0
Output for 8.1.0 - 8.1.20
memory before use: 388256 init $mem memory in function: 8248 memory after use: 0
Output for 8.0.1 - 8.0.29
memory before use: 387536 init $mem memory in function: 8248 memory after use: 0
preferences:
44.81 ms | 408 KiB | 5 Q